Tool for compressing tappet-valve springs.



H. P. JOHNSON.

TOOL FOR COMPRESSENG TA PPET VALVE SPRINGS.

APPLICATION HLED SEPT. 2. 1914.

mmmfim Patented Apr. 13, 11915.

HENRY P. JOHNSON, OF COLUMBUS, GEORGIA, ASSIGNOR OF ONE-HALF T0 GEORGE GUNBY JORDAN, 03: COLUMBUS, GEORGIA.

TOOL FOR COLVLPRESSING TAPPET-VALVE SPRINGS.

Specification of Letters I'atent.

Patented Apr. as, rain.

Application filed September 2, 1914. Serial No. 859,860.

To all whom it may concern:

Be it known that l, HENRY PLEAs JOHN- soN, a citizen of the United States, residing at Columbus, in the county of Muscogce, State of Georgia, have invented certain new and useful Improvements in Tools for Compressing Tappet-Valve Springs; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in engine tools and particularly to a tool for removing the spring or a tappet valve of a gas engine.

The principal object of the invention is to provide a simple and novel tool by means of which the spring of the valve can be readily compressed so that the cross key can be removed from the valve stem to permit the subsequent removal of both the spring and the valve.

Other objects and advantages of the invention will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings: Figure 1 is a perspective view of my tool. Fig. 2 is a. side elevation of the same applied to the valve and showing the spring in compressed position. Fig. 3 is a top plan View of the same. Fig. 4 is a transverse sectional view on the line i of Fig. 8.

Referring particularly to the accompanying drawing, 10 represents the valve cage through which extends the valve stem 1].

having the valve 12 on the lower end.

On the stem is a coil spring 13 the lower end of which bears against a washer plate 14 and the upper end against a washer plate 15 both of which are carried on the stem, the latter being stopped by a cross key 16 disposed through the upper end portion of the stem. To remove this valve and stem it is necessary to remove the spring which necessitates first removing the key 16.

It is the particular object of this invention to provide a tool whereby this spring can be quickly and easily compressed so that the cross key can be easily removed.

The tool includes a base member 17 having an upturned portion 18 at one end. Pivoted on this upturned end are the arms 01' the yoke 19, this upturned portion being provided with a plurality of openings 20 so that the yoke can be adjusted to various heights thereon. Pivoted on each arm of the yoke is a vertically extending link 21 the upper end of which is pivotally connected with the downturned flange 22 of a plate 23. Formed in this plate is a double key-hole slot 24.

The valve cage is placed on the base and then the yoke drawn downwardly over the upper end of the stem until the stem enters the central circular portion of the double key-hole slot and the ends of the key pass through the straight end portions of the slot. Further downward pressure on the yoke will cause the plate 23 to bear on the plate or washer 15 and compress the spring. The spring is held in this position so as to facilitate the removal of the key 16. After the removal of the key the spring is permitted to expand and then removed entirely from the valve stem.

The'same operation of the tool is proceeded with when the spring is replaced and the key is again inserted through the stem.

What is claimed is:

. A tool for facilitating the removal oi the spring of an engine tappet valve comprising a base member having an upturned end provided with a plurality of openings, a yoke adjustably pivoted on the upturned portion, link members pivotally connected to the arms of the yoke, and a plate pivotally connected to the outer ends of said links, said plate havin an elongated slot formed with a central circular portion.

In testimony whereof, I aiiix my signature, in the presence of two witnesses.

HENRY P. JOHNSON.

Witnesses:

Gr. GUNBY JORDAN, J. D. MAssnY.

topics or this patent may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0. 

